Improvement in machines for making brass kettles and other hollow-ware



F. 1. 'IS'EY'MZIUUR.

Machines for Making Brass-Kettlesand other.

Hollow-Ware.

NO. 1 34,93'8 Patented 1am 14,1873.

UNITED S'rA'rns FREDERICKJ. SEYMOUR, OF IVOLCOTTVILLE, CONNECTICUT.

IMPROVEMENT IN MACH INES FOR MAKING BRASS KETTLES AND OTHER HOLLOW-WARE.

Specification forming part of Letters Patent No. 1 34,938, dated January14, 1873.

To all whom it may concern:

Be it known that I, FREDERICK J. SEY- MOUR, of Wolcottville, in thecounty of Litehfield and State of Connecticut, have invented and made anImprovement in Machinery for Making Brass Kettles and other hollowarticles; and the following is declared to be a correct descriptionthereof.

Machinery has heretofore been made for spinning up sheet metal intokettles and other hollow articles. Where a mold or form has beenemployed, and the metal rolled upon the same into shape, the metal isvery liable to draw into crimps and folds before being acted upon by thetool; hence, when compressed by the tool, it is liable to be injured,and not be of perfectly uniform thickness, because the crimps or flutesthicken more at some places than at others as drawn down. Theconsequence is that the kettle has to be reduced by gradual stages, andannealing is required between each reduction. In cases where rollershave been employed to bring the sheet metal into shape, the reductioncan only be small at each successive operation, or else the generalshape of the kettle would be distorted and irregular, and may be brokenin the operation.

In spinning up sheet metal by hand it is usual to employ what is knownas a backburnisher, viz., a stick of wood or implement held by hand, toprevent the formation of corrugations or wrinkles in the metal.

My present invention is made for the purpose of forming kettles or otherhollow articles upon a form or shape at once by two conjoint reductions;thereby the metal is held so that folds, corrugations, or crimps cannotbe formed, and a much greater reduction can be obtained at once than washeretofore possible. In most instances this mode of forming articles canbe used to produce the complete ketttle at once; or it may be employedas apreliminary operation before the final complete shaping of thehollow article.

I make use of two reducing-tools; the first acts to shape the metal uponthe revolving form and bring it to the proper thickness; the second toolacts against the first, to partially reduce the metal in thickness andpre sent it to the first tool for final shaping upon the form, and atthe same time the second tool keeps the sheet of metal out in the formof a curved or fiat ring, and prevents the formation of folds, creases,or corrugations.

In the drawing, Figure l is a plan of the machine employed by me. Fig. 2is a section in larger size, representing the two reducingtools as theyact upon the sheet of metal; and

Fig. 3 is a section of the slide holding the secbe employed, and morethan two may be made use of.

Where the kettle or hollow article is made with straight sides, thetools 2' and 0 are to be mounted in a rest, k, that is moved along by ahand-Wheel, l, and gearing or otherwise over the bed m,- but where thearticle to be produced does not have straight sides, the tools 2' 0 maybe set in yielding slides or bearings, as in my patent of August 11,1868.

The tool 0 should be mounted at the end of the slide at, seen in Figs. 1and 3, and is adjusted to position, but may be fixed firmly thereafter.The tool i should be in the sliderest 19 so as to be brought back out ofthe Way of the disk or blank when first introduced, and, as it isprojected to place, it will commence the spinning or forming operationat the bottom edge of the shape or form a, and then, when the tool 6 hasbeen brought up contiguous to the form a and tool 0, the two will bemoved lengthwise of the kettle and reduce the blank directly to theshape of the form, there being one reducing operation between the tools01 and o, and the other between the tool 6 and form co, and at the sametime the sheet of metal or blank will be kept in shape and not draw intofolds or creases under the most severe re FFICE.

lssigued by me this 20th day of January,

FREDERICK J. SEYMOUR.

Witnesses GEO. T. PINGKNEY, HAROLD SERRELL.

